// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package dotnet

import (
	"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/dotnetdiagnosticsreceiver/network"
)

// serializationType is parsed at the beginning of each block. The resulting
// type name determines which parser should handle the remaining bytes in the
// block.
type serializationType struct {
	version          int32
	minReaderVersion int32
	name             string
}

func parseSerializationType(r network.MultiReader) (t serializationType, err error) {
	err = beginPrivateObject(r)
	if err != nil {
		return
	}

	const tagNullReference = 1
	err = r.AssertNextByteEquals(tagNullReference)
	if err != nil {
		return
	}

	err = r.Read(&t.version)
	if err != nil {
		return
	}

	err = r.Read(&t.minReaderVersion)
	if err != nil {
		return
	}

	var strlen int32
	err = r.Read(&strlen)
	if err != nil {
		return
	}

	t.name, err = r.ReadASCII(int(strlen))
	if err != nil {
		return
	}

	err = endObject(r)
	return
}
